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Changelog

What shipped, and when

Models added, prices changed, surfaces shipped. Only things you can see from outside — a model that appeared in the catalog, a rate that moved, a page that started existing. Current prices are always on the pricing table, and machine-readable at pricing.json.

  1. Docs

    Claude capability listings corrected

    The Claude models no longer list JSON Schema structured output. `response_format: {type: "json_schema"}` is accepted but not enforced on any Claude model — the reply comes back as ordinary prose — so the capability has been removed from the catalog rather than left standing as a promise the API does not keep. A tool declared with `strict: true` does return schema-shaped arguments, and that is the supported way to get typed output from a Claude model. Separately, claude-opus-5-5 chooses its own tools: tool_choice takes "auto" or "none", and forcing one specific function is not supported on that model — a forced choice now returns an error that says exactly that.

  2. Models

    Claude Opus 5.5 is live

    Anthropic Claude Opus 5.5 joins the catalog — the first model of the Claude 5.5 family and the most capable Claude to date. It leads Claude Opus 5 and Claude Fable 5.1 on agentic coding (Terminal-Bench 4.0: 66.4%, versus 55.8% and 52.3%), knowledge work (GDPval-AA 1846) and computer use (OSWorld 2.0: 81.8%), and ranks #1 on the Artificial Analysis Intelligence Index v4.3 with a score of 58. It takes text and image input across a 1M-token context with up to 128K output tokens. On QuickSilver Pro it's $3.20 input / $16 output per 1M tokens, 20% below Anthropic's $4 / $20 list and 20% less per token than Opus 5. Point base_url at https://api.quicksilverpro.io/v1 and use model="claude-opus-5-5".

  3. Pricing

    Grok 4.7 now at xAI's list price

    Grok 4.7 moves to xAI's published list price, the same as Grok 4.6: $2 input / $6 output per 1M tokens and $0.50 cached input. A request whose prompt exceeds 200K tokens bills at $4 / $12 ($1 cached). Launch-day pricing was $1.60 / $4.80.

  4. Models

    MiMo-V2.6-Pro and MiMo-V2.6-Flash are live

    Xiaomi's MiMo-V2.6 generation joins the catalog. MiMo-V2.6-Pro is Xiaomi's flagship open-weights model (1.02T-parameter MoE, 42B active) and the top open-weights model on the Artificial Analysis Intelligence Index v4.3 with a score of 46, on AA's intelligence-versus-cost Pareto frontier; it is $0.348 input / $0.696 output per 1M tokens. MiMo-V2.6-Flash is the fast, low-cost sibling (309B MoE, 15B active) at $0.112 / $0.224, the same price as MiMo-V2.5. Both are 20% below Xiaomi's list price, take text and image input across a 1M-token context, and support tools and structured output. Reasoning is off by default; pass reasoning: { enabled: true } to opt in. Use model="mimo-v2.6-pro" or model="mimo-v2.6-flash".

  5. Models

    Grok 4.7 is live

    xAI Grok 4.7 joins the catalog — xAI's new flagship for coding, agentic tasks and knowledge work, succeeding Grok 4.6, built for long-running software engineering and for checking its own work. It accepts text and image input across a 500K-token context and always reasons (reasoning.enabled=false is rejected; set reasoning_effort to control depth). On QuickSilver Pro it's $1.60 input / $4.80 output per 1M tokens, xAI list parity and 20% below Grok 4.6; a request whose prompt exceeds 200K tokens bills at $3.20 / $9.60, xAI's long-context rate. Point base_url at https://api.quicksilverpro.io/v1 and use model="grok-4.7".

  6. Models

    System One: Jev 1.13 typed decisions on /v1/systemone

    A new kind of model joins the catalog. TypeSafe's Jev 1.13 is a System One model: it does not generate text — you POST a state and up to 64 typed questions (choice, score or noul) to https://api.quicksilverpro.io/v1/systemone and it answers every one in a single forward pass with calibrated probabilities, for routing, classification, triage, scoring and guardrail decisions. It bills input tokens only, at $0.042 per 1M, with output tokens free — TypeSafe's own list rate — and every response's usage block carries the call's USD cost. 32K-token context, same key and balance as the rest of the catalog; it is not reachable through Chat Completions. Docs: /docs/systemone.

  7. Models

    Qwen3.8 Omni Flash

    Qwen's first agentic omni model joins the catalog at $0.12 input / $0.376 output per 1M tokens, with cached input at $0.0128. It natively understands image, audio and video input and can drive tools across long workflows, with the family's full 1M-token context window and 131K max output. A single unified input rate covers every modality, and QuickSilver Pro sells it ~20% below Alibaba's own list price of $0.15 / $0.47 — omni capabilities at flash pricing. Point base_url at https://api.quicksilverpro.io/v1 and use model="qwen3.8-omni-flash".

  8. Models

    GPT-6 Astra

    OpenAI GPT-6 Astra is live — OpenAI's new flagship for long-horizon agentic coding, deep research and document work, with a 1M-token context, 128K max output and image input. On QuickSilver Pro it's $10 input / $50 output per 1M tokens, OpenAI list parity, on the same OpenAI-compatible endpoint as the rest of the catalog; a request whose prompt exceeds 200K tokens bills at $20 / $75, OpenAI's long-context rate. Point base_url at https://api.quicksilverpro.io/v1 and use model="gpt-6-astra".

  9. Models

    Claude Fable 5.1

    Anthropic Claude Fable 5.1 is live — the Mythos-class flagship, successor to Fable 5 for long-horizon agentic work and the most capable reasoning, with a 1M-token context and image input. On QuickSilver Pro it's $8 input / $40 output per 1M tokens, 20% below Anthropic's $10 / $50 list. Point base_url at https://api.quicksilverpro.io/v1 and use model="claude-fable-5-1".

  10. Models

    Hy4 (preview)

    Tencent Hy4 is live as a preview — the successor to Hy3 for coding and agentic workflows with reasoning over a 1M-token context. On QuickSilver Pro it's $0.6672 input / $2.0008 output per 1M tokens (cached input $0.0336), 20% below Tencent's $0.834 / $2.501 OpenRouter rate. Preview endpoint: availability and behavior may change. Point base_url at https://api.quicksilverpro.io/v1 and use model="hy4-preview".

  11. Models

    Muse Spark 1.3

    Meta Muse Spark 1.3 is live — Meta's flagship coding and agentic reasoning model, with stronger agentic and coding performance and better usability than Muse Spark 1.2 over a 1M-token context with multimodal input. On QuickSilver Pro it's $1.00 input / $3.40 output per 1M tokens (cached input $0.12), ~20% below Meta's $1.25 / $4.25 list price. Reasoning is always on; use reasoning_effort to trade depth against cost. Muse Spark 1.2 remains available at model="muse-spark-1.2". Point base_url at https://api.quicksilverpro.io/v1 and use model="muse-spark-1.3".

  12. Pricing

    Kimi K3 re-priced to $2.55 / $12.75

    Kimi K3 moves from $2.40 / $12.00 to $2.55 / $12.75 per 1M input/output tokens (cached input $0.255). It remains 15% below Moonshot's $3.00 / $15.00 list price; the adjustment aligns the sell price with the current cheapest production route.

  13. Models

    Gemini 3.8 Flash

    Google's most capable Flash model joins the catalog at $0.6375 input / $3.1875 output per 1M tokens, with cached input at $0.06375 — 15% below Google's promotional API price (through 2026-12-31). With high reasoning it scores 59 on the Artificial Analysis Intelligence Index, up 3 points from Gemini 3.7 Flash and on the intelligence-vs-cost Pareto frontier, with a 1M-token context and text + image input.

  14. Models

    Qwen3.8 Flash Next

    Alibaba's open-weight preview of the Qwen4 architecture joins the catalog at $0.12 input / $0.376 output per 1M tokens, with cached input at $0.0128. A 6B-active mixture-of-experts model with the full 1M-token context window and 131K max output, tuned for high-volume long-context agents — ~20% below Alibaba's own list price of $0.15 / $0.47.

  15. Models

    Nemotron 3.5 Lightning

    NVIDIA's open 30B-A3B efficiency model joins the catalog for fast, tool-heavy agents at $0.08 input / $0.20 output per 1M tokens, with cached input at $0.04 and a stable 262K context window.

  16. Product

    Browser chat, no API key required

    Every account now gets a free trial balance to spend at /chat — no card and no key. Four models are available on it, and each reply shows the exact cost of that turn at the same per-token rate the API charges.

  17. Models

    Qwen3.8 Max

    Alibaba's Qwen3.8 Max joins the catalog at $2.00 input / $6.00 output per 1M tokens, with implicit caching at $0.25, passed through at Alibaba's own published price.

  18. Pricing

    Qwen3.7 Max repriced to Alibaba's own list

    Now $1.25 input / $3.75 output per 1M tokens, down from $1.475 / $4.425. Alibaba is the only provider of this model, so we sell it at their published price rather than marking it up.

  19. Models

    DeepSeek V4 Flash 0731, refreshed Gemini, audited open catalog

    V4 Flash 0731 brings a 1M context window and native Responses API support. The Gemini line was refreshed and the open-weight catalog re-audited against each publisher's current list; retired models were removed rather than left to rot.

  20. Models

    Claude Opus 5, and Google sign-in

    Claude Opus 5 is available through the same endpoint and the same key as the open-weight catalog. Signing in with Google now works alongside email and password.

  21. Models

    Kimi K3

    Moonshot's K3 lands on release day at $2.40 input / $12.00 output per 1M tokens, 20% below Moonshot's own published rate.

  22. Models

    MiniMax M3, MiMo-V2.5 and Hy3

    Three additions to the open-weight side of the catalog, each with its reference list price published alongside ours.