Fast mode for Claude Opus 4.7 is now available on AI Gateway in research preview.

Fast mode delivers ~2.5x faster output token generation with full Opus 4.7 intelligence. This is an early, experimental feature.

To enable fast mode, pass speed: 'fast' in the anthropic provider options with anthropic/claude-opus-4.7.

import { streamText } from "ai";

const { text } = await streamText({

model: "anthropic/claude-opus-4.7",

prompt: "Analyze this codebase structure and create a plan to add user auth.",

providerOptions: {

anthropic: {

speed: "fast",

},

},

});

You can use fast mode with Claude Code via AI Gateway by setting the CLAUDE_CODE_SKIP_FAST_MODE_ORG_CHECK and CLAUDE_CODE_ENABLE_OPUS_4_7_FAST_MODE variables in your shell configuration file or in ~/.claude/settings.json.

export CLAUDE_CODE_ENABLE_OPUS_4_7_FAST_MODE=1

export CLAUDE_CODE_SKIP_FAST_MODE_ORG_CHECK=1

{

"env": {

"CLAUDE_CODE_SKIP_FAST_MODE_ORG_CHECK": "1",

"CLAUDE_CODE_ENABLE_OPUS_4_7_FAST_MODE": "1"

}

}

Fast mode is priced at 6x standard Opus rates.

All standard pricing multipliers (e.g., prompt caching) apply on top of these rates.

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