README

Provider-agnostic GenAI client for Laravel. Supports Google Gemini, AWS Bedrock (Claude), and Anthropic direct API through a single interface.

Installation

composer require bherila/genai-laravel

Publish the config:

php artisan vendor:publish --tag=genai-config

Configuration

Set your provider in .env:

# Default provider: gemini, bedrock, or anthropic
GENAI_PROVIDER=gemini

# Gemini
GEMINI_API_KEY=your-key
GEMINI_MODEL=gemini-2.0-flash

# Bedrock — uses Bearer-token auth, not AWS SigV4
BEDROCK_API_KEY=your-bedrock-bearer-token
BEDROCK_SESSION_TOKEN=   # optional, for temporary credentials
BEDROCK_REGION=us-east-1
BEDROCK_MODEL=us.anthropic.claude-haiku-4-20250514-v1:0

# Anthropic
ANTHROPIC_API_KEY=your-key
ANTHROPIC_MODEL=claude-sonnet-4-6
ANTHROPIC_MAX_TOKENS=8192

Bedrock auth: this package authenticates against Bedrock with a bearer token (Authorization: Bearer …), not AWS SigV4. BEDROCK_API_KEY is the bearer token itself — there is no separate BEDROCK_SECRET_KEY. If you are coming from the AWS SDK and have IAM access-key-ID + secret-access-key credentials, those are not the right shape for this package; use a Bedrock bearer token instead.

Usage

Fluent builder (recommended)

GenAiRequest provides a uniform call site regardless of provider. Pass any GenAiClient to ::with() — the rest of the chain is identical.

use Bherila\GenAiLaravel\GenAiRequest;
use Bherila\GenAiLaravel\Clients\GenAiClientFactory;

$client = GenAiClientFactory::make('anthropic'); // or 'bedrock', 'gemini'

$response = GenAiRequest::with($client)
    ->system('You are a financial analyst.')
    ->withFile(base64_encode(file_get_contents($path)), 'application/pdf')
    ->prompt('Extract key figures.')
    ->generate();

echo $response->text;
// or
foreach ($response->toolCalls as $call) {
    // ['name' => 'extract_data', 'input' => [...]]
}

Using multiple providers in one application

// Different tenants, different providers — call site is identical
$client = match ($user->ai_provider) {
    'anthropic' => new AnthropicClient(apiKey: $user->anthropic_key, model: 'claude-sonnet-4-6'),
    'bedrock'   => new BedrockClient(apiKey: $creds->key, modelId: $creds->model, region: 'us-east-1'),
    default     => new GeminiClient(apiKey: $user->gemini_key),
};

$response = GenAiRequest::with($client)
    ->system($systemPrompt)
    ->withFiles($files)   // [['base64' => '...', 'mimeType' => 'application/pdf'], ...]
    ->prompt($userPrompt)
    ->tools($toolConfig)
    ->generate();

Tool calling

Define tools once with Schema + ToolDefinition. Each client converts to its native wire format internally.

use Bherila\GenAiLaravel\Schema;
use Bherila\GenAiLaravel\ToolChoice;
use Bherila\GenAiLaravel\ToolConfig;
use Bherila\GenAiLaravel\ToolDefinition;

$toolConfig = new ToolConfig(
    tools: [
        new ToolDefinition(
            name: 'extract_invoice',
            description: 'Extract invoice fields',
            inputSchema: Schema::object([
                'vendor'  => Schema::string('Vendor name'),
                'amount'  => Schema::number('Total amount due'),
                'due_date' => Schema::string('Due date in YYYY-MM-DD'),
            ], required: ['vendor', 'amount']),
        ),
    ],
    choice: ToolChoice::any(),
);

$response = GenAiRequest::with($client)
    ->withFile($base64, 'application/pdf')
    ->prompt('Extract the invoice data.')
    ->tools($toolConfig)
    ->generate();

$call = $response->toolCallByName('extract_invoice');
// ['name' => 'extract_invoice', 'input' => ['vendor' => 'Acme', 'amount' => 1500.00, ...]]

Schema helpers

Schema::string('Optional description')
Schema::number()
Schema::integer()
Schema::boolean()
Schema::object(['field' => Schema::string()], required: ['field'])
Schema::arrayOf(Schema::string())
Schema::enum(['a', 'b', 'c'], 'Pick one')
Schema::fromArray(['type' => 'string', 'format' => 'date'])  // wrap raw JSON Schema

Tool choice

ToolChoice::auto()          // model decides whether to call a tool
ToolChoice::any()           // model must call at least one tool
ToolChoice::none()          // model must not call any tool
ToolChoice::tool('my_fn')   // model must call this specific tool

Gemini File API (large files)

$fileRef = $client->uploadFile($stream, 'application/pdf', 'report.pdf');
try {
    $response = GenAiRequest::with($client)
        ->messages([[
            'role' => 'user',
            'content' => [ContentBlock::text('Summarise this report.')],
        ]])
        ->generate();
    // or use the lower-level method directly:
    $raw = $client->converseWithFileRef($fileRef, 'application/pdf', 'Summarise.');
} finally {
    $client->deleteFile($fileRef);
}

Dependency injection (single provider)

When your app uses one provider, bind it in a service provider and inject GenAiClient:

// AppServiceProvider
$this->app->singleton(GenAiClient::class, fn () => GenAiClientFactory::make());

use Bherila\GenAiLaravel\Contracts\GenAiClient;

class MyService
{
    public function __construct(private readonly GenAiClient $ai) {}

    public function analyse(string $text): string
    {
        return GenAiRequest::with($this->ai)
            ->prompt($text)
            ->generate()
            ->text;
    }
}

Facade

use Bherila\GenAiLaravel\Facades\GenAi;

$response = GenAi::converse($system, $messages, $toolConfig);

GenAiResponse

generate() always returns a GenAiResponse:

Property / method	Description
`->text`	Concatenated text output
`->toolCalls`	`[['name' => '...', 'input' => [...]], ...]`
`->usage`	Normalised `Usage` (tokens, cache tokens) — see below
`->raw`	Provider-specific raw response array
`->hasToolCalls()`	Whether the model called any tool
`->firstToolCall()`	First tool call, or `null`
`->toolCallByName('fn')`	Named tool call, or `null`

Token usage and cost

Every response exposes a Usage object with provider-agnostic token counts. The clients normalise the three different wire shapes (Anthropic input_tokens / Bedrock inputTokens / Gemini promptTokenCount) into one API:

$response = GenAiRequest::with($client)->prompt('...')->generate();

$response->usage->inputTokens;              // non-cached prompt tokens
$response->usage->outputTokens;             // completion tokens
$response->usage->totalTokens;
$response->usage->cacheReadInputTokens;     // served from prompt cache
$response->usage->cacheCreationInputTokens; // written to prompt cache
$response->usage->raw;                      // provider-specific payload

// Estimate cost in USD given per-million-token prices for the model you used.
$cost = $response->usage->estimatedCostUsd(
    inputPerMillion: 3.00,
    outputPerMillion: 15.00,
    cacheReadPerMillion: 0.30,
    cacheCreationPerMillion: 3.75,
);

The three input buckets are non-overlapping (the Gemini adapter subtracts cachedContentTokenCount from promptTokenCount to match Anthropic/Bedrock semantics), so summing them gives total input work billed.

Retry behaviour

All providers retry transient failures transparently. 429 honors the Retry-After: <seconds> response header; 502 / 503 / 504 use exponential backoff. 400 / 401 / 403 / 404 are never retried. After the budget is spent, GenAiRateLimitException::$retryAfter carries the last server-suggested delay so you can re-queue work.

GENAI_RETRY_MAX_ATTEMPTS=3        # total attempts including the first; 1 disables retries
GENAI_RETRY_BACKOFF_BASE_MS=1000  # exponential backoff base (no Retry-After header)
GENAI_RETRY_BACKOFF_MAX_MS=30000  # cap on any single sleep

Override per client by passing a RetryStrategy to the constructor — useful in tests, where injecting a sleeper closure keeps the suite fast:

use Bherila\GenAiLaravel\Http\RetryStrategy;

new AnthropicClient(
    apiKey: '...',
    retry: new RetryStrategy(maxAttempts: 1), // disable retries
);

Listing models

Every client implements listModels(): ModelInfo[], hitting each provider's catalog endpoint and normalising the result:

$client = GenAi::client('anthropic'); // or 'bedrock', 'gemini'

foreach ($client->listModels() as $model) {
    $model->id;                          // call-ready identifier
    $model->name;                        // human-readable display name
    $model->provider;                    // "anthropic" | "bedrock" | "gemini"
    $model->description;                 // free-form, when provided
    $model->inputTokenLimit;             // context window, when advertised
    $model->outputTokenLimit;            // max completion tokens, when advertised
    $model->inputCostPerMillionTokens;   // null — no provider returns pricing
    $model->outputCostPerMillionTokens;  // null — no provider returns pricing
    $model->raw;                         // provider-specific entry
}

Endpoints used: Anthropic GET /v1/models, Bedrock GET https://bedrock.{region}.amazonaws.com/foundation-models (control-plane, not bedrock-runtime), Gemini GET /v1beta/models. Gemini entries that don't support generateContent (embeddings, etc.) are filtered out. None of the provider catalog APIs currently return pricing, so the cost fields are nullable — populate them yourself via PricingBook if you need cost tracking alongside model selection.

Pricing table (`PricingBook`)

Supply your own per-million-token prices for any of the three providers (anthropic, bedrock, gemini) and the package will both decorate ModelInfo and turn Usage records into dollar costs:

use Bherila\GenAiLaravel\PricingBook;

$book = PricingBook::fromArray([
    'anthropic' => [
        'claude-sonnet-4-6' => ['input' => 3.0, 'output' => 15.0, 'cache_read' => 0.3, 'cache_creation' => 3.75],
    ],
    'bedrock' => [
        'us.anthropic.claude-haiku-4-20250514-v1:0' => ['input' => 0.8, 'output' => 4.0],
    ],
    'gemini' => [
        'gemini-2.0-flash' => ['input' => 0.1, 'output' => 0.4],
    ],
]);

// Decorate listModels() output with prices
$models = $book->enrichAll($client->listModels());

// Compute cost for a specific call
$cost = $book->estimateCost($response->usage, $client->provider(), $client->model());

PricingBook::fromConfig() reads the same shape from the genai.pricing config key, so application-wide pricing can live alongside provider config. Existing non-null cost fields on a ModelInfo are preserved by enrich(), and estimateCost() / priceFor() return null when no price is registered for the requested (provider, modelId).

File type support

Each provider accepts a different set of file formats natively. The clients validate MIME types up front and fail fast with an actionable error rather than round-tripping a request the API is going to reject. Images (PNG / JPEG / GIF / WebP) are routed to the correct image block shape automatically.

For Anthropic and Gemini — which only accept PDF and text-type documents — this package can auto-convert Office formats by treating phpoffice/phpword (+ a PDF renderer) and phpoffice/phpspreadsheet as optional peer dependencies:

Word docs (.doc, .docx, .odt, .rtf) → PDF via PhpWord + Dompdf so layout, tables, and fonts survive. The rendered PDF is sent through Anthropic's native PDF pipeline or Gemini's PDF vision pipeline.
Spreadsheets (.xlsx, .xls, .ods, .csv) → tab-separated text via PhpSpreadsheet. Cell data is emitted as a text block with a === Sheet: <name> === header per sheet.

Neither dependency is in require — when a peer is missing the client falls back to a clear GenAiFatalException telling the caller what to install.

MIME type	Gemini	Bedrock	Anthropic
`application/pdf`	✅ (vision)	✅ `document`	✅ `document`
`text/plain`	✅	✅	✅ `document`
`text/markdown`	✅ (text only)	✅	convert to text
`text/html`	✅ (text only)	✅	convert to text
`text/csv`	auto-convert 📊	✅	auto-convert 📊
`application/xml`	✅ (text only)	—	convert to text
`application/msword` (`.doc`)	auto-convert 📄	✅	auto-convert 📄
`.docx` (`…wordprocessingml.document`)	auto-convert 📄	✅	auto-convert 📄
`.odt` (OpenDocument Text)	auto-convert 📄	—	auto-convert 📄
`application/rtf`	auto-convert 📄	—	auto-convert 📄
`application/vnd.ms-excel` (`.xls`)	auto-convert 📊	✅	auto-convert 📊
`.xlsx` (`…spreadsheetml.sheet`)	auto-convert 📊	✅	auto-convert 📊
`.ods` (OpenDocument Spreadsheet)	auto-convert 📊	—	auto-convert 📊
`image/png`, `image/jpeg`, `image/gif`, `image/webp`	✅ `inline_data`	✅ `image` block	✅ `image` block

📄 Word → PDF requires phpoffice/phpword and a PhpWord PDF renderer (dompdf/dompdf recommended — alternatives: mpdf/mpdf, tecnickcom/tcpdf). Install with composer require phpoffice/phpword dompdf/dompdf.
📊 Spreadsheet → text requires phpoffice/phpspreadsheet. Install with composer require phpoffice/phpspreadsheet.

Bedrock natively accepts the Office formats via its own document block (the Converse API lists pdf, csv, doc, docx, xls, xlsx, html, txt, md as native formats), so no conversion runs for Bedrock requests.

Note: PowerPoint (.ppt, .pptx, .odp) auto-conversion is not included in this PR — the only available PHP library (phpoffice/phppresentation) pins an older phpoffice/phpspreadsheet version that currently has open security advisories. Until that's resolved upstream, convert PowerPoint files to PDF yourself (e.g. via libreoffice --convert-to pdf) before sending them.

Providers

Feature	Gemini	Bedrock	Anthropic
File upload API	✅ `uploadFile()`	❌ inline only	❌ inline only
Inline file bytes	✅	✅	✅
Tool/function calling	✅	✅	✅
File size limit	20 MB	4.5 MB	4.5 MB
System prompts	✅	✅	✅
`listModels()`	✅	✅ (control-plane)	✅
`checkCredentials()`	✅	✅	✅
Pricing in catalog	❌	❌	❌
Image blocks (PNG/JPEG/GIF/WebP)	✅	✅	✅
Office-format documents	auto-convert 📄📊	✅ native	auto-convert 📄📊
Auto DOC/DOCX → PDF (with phpword + dompdf)	✅	n/a	✅
Auto XLSX/XLS/ODS/CSV → text (with phpspreadsheet)	✅	n/a	✅

License

This package is released under the MIT License.

bherila / genai-laravel

Package info

Security

Statistics

README

Installation

Configuration

Usage

Fluent builder (recommended)

Using multiple providers in one application

Tool calling

Schema helpers

Tool choice

Gemini File API (large files)

Dependency injection (single provider)

Facade

GenAiResponse

Token usage and cost

Retry behaviour

Listing models

Pricing table (`PricingBook`)

File type support

Providers

License

bherila / genai-laravel

Package info

Security

Statistics

README

Installation

Configuration

Usage

Fluent builder (recommended)

Using multiple providers in one application

Tool calling

Schema helpers

Tool choice

Gemini File API (large files)

Dependency injection (single provider)

Facade

GenAiResponse

Token usage and cost

Retry behaviour

Listing models

Pricing table (PricingBook)

File type support

Providers

License

Pricing table (`PricingBook`)